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How Does the Resistance of a Wire Vary with Its Area of Cross-section? - Science

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How does the resistance of a wire vary with its area of cross-section?

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Solution

 Resistance (R) of a wire is inversely proportional to its area of cross-section (A), i.e. when area of cross section increases the resistance decreases or vice versa.

Concept: Effects of Electric Current - Heating Effect of Electric Current
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APPEARS IN

NCERT Class 10 Science
Chapter 12 Electricity
Q 18.4 | Page 222
Lakhmir Singh Class 10 Physics (Science)
Chapter 1 Electricity
Q 21.1

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